Force and Motion Word Scramble

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Question	Answer
When an object changes position in relation to a reference point	Motion
The object which stays in place in relation to an object that is moving	Reference Point
The rate at which an object moves;	Speed
The speed of an objection in a particular direction	Velocity
The rate at which velocity (speed/direction) changes.	Acceleration
Acceleration that occurs in a circular motion	Centripetal Acceleration or Centripetal Force
A push or pull;	Force
an (SI) unit of measurement used by scientists to express force	Newton
The force that results from combining all of the forces exerted on an object	Net Force
When the net force of an object is not zero	Unbalanced Force
When the forces applied to an object produce a net force of zero	Balanced Force
Happens when a force causes an object to move in the direction of the force	Work
A force that opposes motion between two surfaces that are touching	Friction
The force of attraction between all objects that is due to their masses	Gravity
The measure of gravitational forces exerted on an object	Weight
The tendency of all objects to resist any change in motion	Inertia
The characteristic of a moving body that is caused by its mass and its motion	Momentum
Speed =	distance/time
Velocity involves both speed and _________	Direction
Acceleration is any change in ____________	Velocity (speed or direction)
A force is a ________ and __________.	Push and pull
Two forces that affects motion are ______ and _________	Gravity and friction
The force that keeps you in a roller coaster during a looop is called ________________	Centripital Force
Combining all of the forces acting on an object gives you _______ ________.	Net Force
If forces are working in the same direction, you ______ them	Add.
If forces are working in opposite directions, you ______ them.	Subtract
A net force of zero means that an object is ____________	Balanced.
A net for of 5N left means that an object is ___________.	Un balanced.
It always takes a ________ force to move an object or stop it from moving.	Unbalanced.
Friction is an _________ force because objects are working against each other.	Unbalanced.
Putting oil or water on a surface would _______ friction.	Reduce.
PUtting sandpaper on a surface would _______ friction.	Increase.
Friction changes the _________ of an object.	Motion
Gravity is a force of ________ because objects are pulling toward each other.	Attraction
All objects in the universe attract each other through gravitational force. The size of the force depends on the ________ of the object and the ________ between them.	Mass and Distance.
The more mass something has the _________ gravitational pull it has.	More.
The closer objects are, the, _________ gravitational force they have.	More.
When objects are further distance apart, their gravitational force ________	Lessens.
Which does NOT change based on gravity? Mass or weight?	Mass.
1 Law - Inertia - an object at rest will stay at ________.	Rest
An object in motion will stay in _______, unless an ________ force acts upon it.	Motion and Unbalanced
2nd LQV^/ - Acceleration - an object's acceleration depends on it's mass and the amount of force exerted on it. As mass increases, acceleration ________________.	Decreases
3rd Law Action/Reaction - whenever one object exerts a force on another object, the second object exerts an _______ and ________ force on the first object.	Equal and opposite.
Machines make work and motion easier because they change the ___________ and/or the amount of the force	Direction
Name the six simple machines	Lever, pulley, inclined plane (ramp), wedge, wheel and axle, screw.
Name the three parts of the lever.	Fulcrum, load (resistance), force.
Ona lst class lever, the ______ is in the middle.	Fulcrum.
Moving the fulcrum closer to the load/resistance	Decreases the effort.
On a 2nd class lever, the _ _____ is in the middle.	Load
On a 3rd class lever, the _______ is in the middle	Effort
Fixed/Simple pulleys only change the ______ of the force.	Direction
Moveable pulleys change the _ ______ of the force	Amount.
When a machine reduces the effort, it is called a mechanical __________.	Adventage

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